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Support s390/s390x in performance schema's cycle-counting functions.
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Filed upstream at http://bugs.mysql.com/bug.php?id=59953
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diff -up mysql-5.5.28/include/my_rdtsc.h.p11 mysql-5.5.28/include/my_rdtsc.h
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--- mysql-5.5.28/include/my_rdtsc.h.p11 2012-08-29 10:50:46.000000000 +0200
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+++ mysql-5.5.28/include/my_rdtsc.h 2012-12-06 14:22:13.651823354 +0100
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@@ -125,6 +125,7 @@ C_MODE_END
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#define MY_TIMER_ROUTINE_MACH_ABSOLUTE_TIME 25
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#define MY_TIMER_ROUTINE_GETSYSTEMTIMEASFILETIME 26
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#define MY_TIMER_ROUTINE_ASM_SUNPRO_X86_64 27
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+#define MY_TIMER_ROUTINE_ASM_S390 28
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#endif
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diff -up mysql-5.5.28/mysys/my_rdtsc.c.p11 mysql-5.5.28/mysys/my_rdtsc.c
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--- mysql-5.5.28/mysys/my_rdtsc.c.p11 2012-08-29 10:50:46.000000000 +0200
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+++ mysql-5.5.28/mysys/my_rdtsc.c 2012-12-06 14:22:13.672823375 +0100
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@@ -224,6 +224,13 @@ ulonglong my_timer_cycles(void)
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clock_gettime(CLOCK_SGI_CYCLE, &tp);
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return (ulonglong) tp.tv_sec * 1000000000 + (ulonglong) tp.tv_nsec;
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}
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+#elif defined(__GNUC__) && defined(__s390__)
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+ /* covers both s390 and s390x */
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+ {
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+ ulonglong result;
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+ __asm__ __volatile__ ("stck %0" : "=Q" (result) : : "cc");
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+ return result;
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+ }
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#elif defined(HAVE_SYS_TIMES_H) && defined(HAVE_GETHRTIME)
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/* gethrtime may appear as either cycle or nanosecond counter */
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return (ulonglong) gethrtime();
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@@ -533,6 +540,8 @@ void my_timer_init(MY_TIMER_INFO *mti)
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mti->cycles.routine= MY_TIMER_ROUTINE_ASM_GCC_SPARC32;
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#elif defined(__sgi) && defined(HAVE_CLOCK_GETTIME) && defined(CLOCK_SGI_CYCLE)
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mti->cycles.routine= MY_TIMER_ROUTINE_SGI_CYCLE;
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+#elif defined(__GNUC__) && defined(__s390__)
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+ mti->cycles.routine= MY_TIMER_ROUTINE_ASM_S390;
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#elif defined(HAVE_SYS_TIMES_H) && defined(HAVE_GETHRTIME)
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mti->cycles.routine= MY_TIMER_ROUTINE_GETHRTIME;
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#else
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